Method of manufacturing a shadow mask, shadow mask manufactured

Details Method of manufacturing a shadow mask, shadow mask manufactured Method of manufacturing a shadow mask, shadow mask manufactured

1990-05-17

1991-06-25

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

445 58, H01J 900

Patent

active

050263129

ABSTRACT:
A shadow mask sheet manufactured from an iron-nickel alloy is drape-drawn by means of a drawing process to form a shodow mask 15. Prior to the actual drawing process the shadow mask sheet is subjected to an annealing treatment. After the drawing process the shadow mask is successively subjected to a complementary annealing treatment in a non-oxidizing gas atmosphere at a temperature between 700.degree. C. and 1200.degree. C. to improve the magnetic screening properties of the shadow mask 15, and to an annealing treatment in an oxidizing gas atmosphere. After oxidation the shadow mask 15 is connected on a supporting frame 17 which may be subjected to an annealing treatment in a non-oxidizing gas atmosphere and then to an oxidizing annealing treatment.

REFERENCES:
patent: 4427396 (1984-01-01), Van Den Berg
patent: 4612061 (1986-09-01), Suzuki et al.
patent: 4698545 (1986-10-01), Inabe et al.

Affiliated with

Also associated with

Rating

Method of manufacturing a shadow mask, shadow mask manufactured does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing a shadow mask, shadow mask manufactured , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing a shadow mask, shadow mask manufactured will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1037293